Join us here on Top 5 Coolness Countdown as we separate the coolness from the lukewarm. This week: iOS 7.1, 3D-printed body parts, gyrating and pole-dancing robots and a lot more.

If you’d like to hear us talking about this week’s countdown, listen to our Top 5 Coolness Countdown podcast:

5. iOS 7.1 Rolls Out, But Look Out

Apple rolled out iOS 7.1 this week, with CarPlay support, camera improvements, press-to-talk with Siri and a shimmering new unlock screen. But look out, some people are noticing diminished battery life.

Three high school students in Loveland, Ohio built their own 3D bio printer that could be used to print human organs. They have laid out a small sheet of bacterial cells. Their teacher said he “had tears running down his face” when he saw what his amazing students had done.

You won’t believe what those robots are up to now. A pole-dancing bot made her debut in Germany this week — check out the wild gyrations of those two clanking gals in the pic above. Want one for yourself? It’ll cost you a cool $40,000.

Nokia announced that Refocus, an app that can focus on parts of an image AFTER you’ve taken it, will be available on all Windows Phone devices. The feature, which was popularized by the camera maker Lytro, lets you blur out some portions of a photo and bring others into focus.

Whoa, look at these huge pics of the new Alfa Romeo 4C convertible (we recommend you click the double arrow to enjoy these pics full-screen). This tiny pocket rocket weighs a mere 2,100 pounds, and goes from 0 to 62 in 4.5 seconds Look for it early next year.